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【单选题】
What is listed as one of Dr. Green's accomplishments?A.
Winning a national engineering award
B.
Founding a scientific research institute
C.
Developing an important research technique
D.
Establishing a new department for research
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反馈参考答案：
举一反三
【单选题】The Mekong River, which________ several countries in Southeast Asia, ______to be playing a significant role in the region.
A.
links; is considered
B.
has linked; considers
C.
is linked; is considered
D.
links; considers
【单选题】某固体饮料，经实验证实为大肠菌群阳性的管数为：0（1gx3）、0（0.1gx3）、0（0.01gx3），请判断该样品大肠菌群最可能数是（）MPN/100g。
A.
<3
B.
3
C.
<30
D.
30
【简答题】There was a(n) ____ long silence in the room. Neither of them had the nerve to say something to break the ice.
【单选题】The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．
A.
which
B.
that
C.
where
D.
what
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